Flexible hoses and joint structures thereof

Details Flexible hoses and joint structures thereof Flexible hoses and joint structures thereof

1999-01-20

2000-09-12

Brinson, Patrick

Pipes and tubular conduits

Flexible

Corrugated

138121, 138177, 138DIG11, 138178, F16L 1111

Patent

active

061162892

ABSTRACT:
A flexible hose 1 of the present invention is formed by blocking and interrupting a spiral groove 5 inside a hill 2 of a corrugated hose end portion 1a or 1b (inner surface helical concave portion) to form a closed section 4, or by blocking and interrupting a spiral groove 5 formed outside a valley 3 of a corrugated end portion 1a or 1b of a hose (outer surface helical concave portion) to form a blocked section 4. The flexible hose of the present invention can provide an improved air tightness when connected to a joint, requiring no troublesome steps or treatments.

REFERENCES:
patent: 1740524 (1929-12-01), Schmidt
patent: 1813039 (1931-03-01), Escol
patent: 2012766 (1935-08-01), Meyer
patent: 2157564 (1939-05-01), Peuthert
patent: 2406838 (1946-09-01), Kepler
patent: 2695038 (1954-11-01), Parce et al.
patent: 4592231 (1986-06-01), Kant
patent: 5439035 (1995-08-01), Dal Palu e, acu u Attilo
patent: 5706864 (1998-01-01), Pfleger

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